A084536 - OEIS

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A084536 as a triangular array

										1
									1		3
								1		6		10
							1		9		29		36
						1		12		57		132		137
					1		15		94		315		590		543
				1		18		140		612		1629		2628		2219
			1		21		195		1050		3605		8127		11732		9285
		1		24		259		1656		6950		19992		39718		52608		39587
	1		27		332		2457		12177		42498		106644		191754

A084536 as a square array

1	1	1	1	1	1	1	1	1	1
3	6	9	12	15	18	21	24	27
10	29	57	94	140	195	259	332
36	132	315	612	1050	1656	2457
137	590	1629	3605	6950	12177
543	2628	8127	19992	42498
2219	11732	39718	106644
9285	52608	191754
39587

A084536 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	3	6	9	12	15	18	21	24	27
		10	29	57	94	140	195	259	332
			36	132	315	612	1050	1656	2457
				137	590	1629	3605	6950	12177
					543	2628	8127	19992	42498
						2219	11732	39718	106644
							9285	52608	191754
								39587